378815252454 has 48 divisors (see below), whose sum is σ = 870180292800. Its totient is φ = 118765236528.

The previous prime is 378815252449. The next prime is 378815252489. The reversal of 378815252454 is 454252518873.

It is a happy number.

378815252454 is a `hidden beast` number, since 3 + 78 + 8 + 1 + 525 + 2 + 45 + 4 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 378815252454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3936804 + ... + 4031879.

It is an arithmetic number, because the mean of its divisors is an integer number (18128756100).

Almost surely, 2^378815252454 is an apocalyptic number.

378815252454 is an abundant number, since it is smaller than the sum of its proper divisors (491365040346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378815252454 is a wasteful number, since it uses less digits than its factorization.

378815252454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7968849 (or 7968846 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 54.

It can be divided in two parts, 3788152 and 52454, that added together give a triangular number (3840606 = T₂₇₇₁).

The spelling of 378815252454 in words is "three hundred seventy-eight billion, eight hundred fifteen million, two hundred fifty-two thousand, four hundred fifty-four".